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-rw-r--r--arch/v850/kernel/syscalls.c196
1 files changed, 0 insertions, 196 deletions
diff --git a/arch/v850/kernel/syscalls.c b/arch/v850/kernel/syscalls.c
deleted file mode 100644
index 1a83daf8e24f..000000000000
--- a/arch/v850/kernel/syscalls.c
+++ /dev/null
@@ -1,196 +0,0 @@
1/*
2 * arch/v850/kernel/syscalls.c -- Various system-call definitions not
3 * defined in machine-independent code
4 *
5 * Copyright (C) 2001,02 NEC Corporation
6 * Copyright (C) 2001,02 Miles Bader <miles@gnu.org>
7 *
8 * This file is subject to the terms and conditions of the GNU General
9 * Public License. See the file COPYING in the main directory of this
10 * archive for more details.
11 *
12 * This file was derived the ppc version, arch/ppc/kernel/syscalls.c
13 * ... which was derived from "arch/i386/kernel/sys_i386.c" by Gary Thomas;
14 * modified by Cort Dougan (cort@cs.nmt.edu)
15 * and Paul Mackerras (paulus@cs.anu.edu.au).
16 */
17
18#include <linux/errno.h>
19#include <linux/mm.h>
20#include <linux/smp.h>
21#include <linux/syscalls.h>
22#include <linux/sem.h>
23#include <linux/msg.h>
24#include <linux/shm.h>
25#include <linux/stat.h>
26#include <linux/mman.h>
27#include <linux/sys.h>
28#include <linux/ipc.h>
29#include <linux/utsname.h>
30#include <linux/file.h>
31
32#include <asm/uaccess.h>
33#include <asm/unistd.h>
34
35/*
36 * sys_ipc() is the de-multiplexer for the SysV IPC calls..
37 *
38 * This is really horribly ugly.
39 */
40int
41sys_ipc (uint call, int first, int second, int third, void *ptr, long fifth)
42{
43 int version, ret;
44
45 version = call >> 16; /* hack for backward compatibility */
46 call &= 0xffff;
47
48 ret = -EINVAL;
49 switch (call) {
50 case SEMOP:
51 ret = sys_semop (first, (struct sembuf *)ptr, second);
52 break;
53 case SEMGET:
54 ret = sys_semget (first, second, third);
55 break;
56 case SEMCTL:
57 {
58 union semun fourth;
59
60 if (!ptr)
61 break;
62 if ((ret = access_ok(VERIFY_READ, ptr, sizeof(long)) ? 0 : -EFAULT)
63 || (ret = get_user(fourth.__pad, (void **)ptr)))
64 break;
65 ret = sys_semctl (first, second, third, fourth);
66 break;
67 }
68 case MSGSND:
69 ret = sys_msgsnd (first, (struct msgbuf *) ptr, second, third);
70 break;
71 case MSGRCV:
72 switch (version) {
73 case 0: {
74 struct ipc_kludge tmp;
75
76 if (!ptr)
77 break;
78 if ((ret = access_ok(VERIFY_READ, ptr, sizeof(tmp)) ? 0 : -EFAULT)
79 || (ret = copy_from_user(&tmp,
80 (struct ipc_kludge *) ptr,
81 sizeof (tmp))))
82 break;
83 ret = sys_msgrcv (first, tmp.msgp, second, tmp.msgtyp,
84 third);
85 break;
86 }
87 default:
88 ret = sys_msgrcv (first, (struct msgbuf *) ptr,
89 second, fifth, third);
90 break;
91 }
92 break;
93 case MSGGET:
94 ret = sys_msgget ((key_t) first, second);
95 break;
96 case MSGCTL:
97 ret = sys_msgctl (first, second, (struct msqid_ds *) ptr);
98 break;
99 case SHMAT:
100 switch (version) {
101 default: {
102 ulong raddr;
103
104 if ((ret = access_ok(VERIFY_WRITE, (ulong*) third,
105 sizeof(ulong)) ? 0 : -EFAULT))
106 break;
107 ret = do_shmat (first, (char *) ptr, second, &raddr);
108 if (ret)
109 break;
110 ret = put_user (raddr, (ulong *) third);
111 break;
112 }
113 case 1: /* iBCS2 emulator entry point */
114 if (!segment_eq(get_fs(), get_ds()))
115 break;
116 ret = do_shmat (first, (char *) ptr, second,
117 (ulong *) third);
118 break;
119 }
120 break;
121 case SHMDT:
122 ret = sys_shmdt ((char *)ptr);
123 break;
124 case SHMGET:
125 ret = sys_shmget (first, second, third);
126 break;
127 case SHMCTL:
128 ret = sys_shmctl (first, second, (struct shmid_ds *) ptr);
129 break;
130 }
131
132 return ret;
133}
134
135static inline unsigned long
136do_mmap2 (unsigned long addr, size_t len,
137 unsigned long prot, unsigned long flags,
138 unsigned long fd, unsigned long pgoff)
139{
140 struct file * file = NULL;
141 int ret = -EBADF;
142
143 flags &= ~(MAP_EXECUTABLE | MAP_DENYWRITE);
144 if (! (flags & MAP_ANONYMOUS)) {
145 if (!(file = fget (fd)))
146 goto out;
147 }
148
149 down_write (&current->mm->mmap_sem);
150 ret = do_mmap_pgoff (file, addr, len, prot, flags, pgoff);
151 up_write (&current->mm->mmap_sem);
152 if (file)
153 fput (file);
154out:
155 return ret;
156}
157
158unsigned long sys_mmap2 (unsigned long addr, size_t len,
159 unsigned long prot, unsigned long flags,
160 unsigned long fd, unsigned long pgoff)
161{
162 return do_mmap2 (addr, len, prot, flags, fd, pgoff);
163}
164
165unsigned long sys_mmap (unsigned long addr, size_t len,
166 unsigned long prot, unsigned long flags,
167 unsigned long fd, off_t offset)
168{
169 int err = -EINVAL;
170
171 if (offset & ~PAGE_MASK)
172 goto out;
173
174 err = do_mmap2 (addr, len, prot, flags, fd, offset >> PAGE_SHIFT);
175out:
176 return err;
177}
178
179/*
180 * Do a system call from kernel instead of calling sys_execve so we
181 * end up with proper pt_regs.
182 */
183int kernel_execve(const char *filename, char *const argv[], char *const envp[])
184{
185 register char *__a __asm__ ("r6") = filename;
186 register void *__b __asm__ ("r7") = argv;
187 register void *__c __asm__ ("r8") = envp;
188 register unsigned long __syscall __asm__ ("r12") = __NR_execve;
189 register unsigned long __ret __asm__ ("r10");
190 __asm__ __volatile__ ("trap 0"
191 : "=r" (__ret), "=r" (__syscall)
192 : "1" (__syscall), "r" (__a), "r" (__b), "r" (__c)
193 : "r1", "r5", "r11", "r13", "r14",
194 "r15", "r16", "r17", "r18", "r19");
195 return __ret;
196}
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